Implement greylisting feature

Greylisting (or graylisting) is a method of defending e-mail users against spam.

With this feature, qmail will "temporarily reject" any email from a sender it does not recognize. If the mail is legitimate the originating server will, after a delay, try again and, if sufficient time has elapsed, the email will be accepted. If the mail is from a spam sender, sending to many thousands of email addresses, it will probably not be retried.

We 'll make use of Perl scripts jgreylist and jgreylist-clean written by John Simpson

Edit /var/qmail/supervise/qmail-smtpd/run and change the following

	GREYLIST="/var/qmail/bin/jgreylist"

	JGREYLIST_DIR="$VQ/jgreylist"

cp /downloads/scripts/jgreylist /var/qmail/bin
cp /downloads/scripts/jgreylist-clean /usr/local/sbin
chown root:vchkpw /var/qmail/bin/jgreylist
chmod 0750 /var/qmail/bin/jgreylist
chown root:root /usr/local/sbin/jgreylist-clean
chmod 0755 /usr/local/sbin/jgreylist-clean

mkdir -m 0700 /var/qmail/jgreylist
chown vpopmail:vchkpw /var/qmail/jgreylist
echo '/usr/local/sbin/jgreylist-clean 2>&1 > /dev/null' > /etc/cron.daily/jgreylist-clean
qmailctl restart

OPTIONAL : If you need more performance you can use a compiled version of jgreylist

cd /downloads/scripts/
mv /downloads/scripts/jgreylist /downloads/scripts/jgreylist.pl
make jgreylist
cp /downloads/scripts/jgreylist /var/qmail/bin
chown root:vchkpw /var/qmail/bin/jgreylist
chmod 0750 /var/qmail/bin/jgreylist

List of optional features

Users comments

Thibs - 02/04/2013 21:44

It's just temporary rejected.

Take a look on http://qmailrocks.thibs.com/greylisting.php for more explanation (in this case it's how to implement it)

Matt - 02/04/2013 17:13

Any ideas why I get this for some domains?

------------------------------------------

var/qmail/bin/qmail-remote: 25: [[: not found

sxxx.xxx.xxx.xxx does not like recipient.

Remote host said: 450 4.2.0 : Recipient address rejected: Greylisted, see

http://postgrey.schweikert.ch/help/xxx.com.html

Giving up on xxx.xxx.xxx.xxx.

------------------------------------------

Thibs - 22/11/2012 12:44

Hello,

You probably missed the installation of daemontools as described on package-install.php.

aptitude install ucspi-tcp daemontools daemontools-run

Simon - 17/11/2012 18:18

Hei Guys,

i crefully followed steps for the qmail installation ... i double check but i'm blocked right now ...

qmailctl restart

Restarting qmail:

* Stopping qmail-smtpdssl.